Back to EveryPatent.com
United States Patent | 5,794,182 |
Manduchi ,   et al. | August 11, 1998 |
Method and system aspects for linear predictive speech encoding are disclosed. These aspects comprise the definition of an error function, the computation of an optimal vector of continuous pitch coefficients together with an optimal pitch, and the weighted vector quantization of the continuous pitch coefficients. The techniques allows the faster computation of the optimal combination pitch--continuous coefficient values without substantial loss of optimal results.
Inventors: | Manduchi; Roberto (San Francisco, CA); Ponceleon; Dulce (Palo Alto, CA); Chu; Ke-Chiang (Saratoga, CA); Wu; Hsi-Jung (Mountain View, CA) |
Assignee: | Apple Computer, Inc. (Cupertino, CA) |
Appl. No.: | 724174 |
Filed: | September 30, 1996 |
Current U.S. Class: | 704/219; 704/220; 704/222; 704/223; 704/230; 704/262 |
Intern'l Class: | G10L 009/00 |
Field of Search: | 704/219,223,262,220,230,207 |
4944013 | Jul., 1990 | Gouvianakis | 381/38. |
5091945 | Feb., 1992 | Kleijn | 381/36. |
5142584 | Aug., 1992 | Ozawa | 381/36. |
5230036 | Jul., 1993 | Akamine | 704/219. |
5455888 | Oct., 1995 | Iyengar | 704/219. |
5481739 | Jan., 1996 | Staats | 395/800. |
5574823 | Nov., 1996 | Hassanein | 704/205. |
5596676 | Jan., 1997 | Swaminathan | 704/219. |
5642464 | Jun., 1997 | Yue | 704/219. |
5664055 | Sep., 1997 | Kroon | 704/223. |